At step or "in step"?

Question

When I searched I found many usages of both "in step" and "at step". For example, Google returns: * "at each step" — about 55,000,000 results * "in each step" — about 45,000,000 results But which one is better to use in scientific papers?

Answer 1

In this instance I would think that context matters. What is the rest of the statement you're formulating? At each step, to me, seems like a journey, or traveling. While in each step, seems more like a process, like cooking using a recipe.